OCTO Focuser for refractors

The Octo focuser series is being expanded. We now also have a rotatable extension for refractors with 95mm adjustment range and 50.8mm free space. All 8 ball bearings are authorized to ensure that the extension tube runs optimally.

Referred

The original model BTrL was referred to:
- Extract is on 8 previous model only had 4 ball bearings)
- All 8 ball bearings are authorized (previous model had no ball bearing adjustment)
- M54x0.75 internal thread in 2 inch plug, which was not removable)
- The previous model only had it on the microfocus side

Technical data:

Connections on the eyepiece side:
- M54x0.75 internal thread
- consists of a 2 inch eyepiece barrel,
- more on 1.25 inch eyepiece barrel

Telescope-side connections:
- 90mm dovetail mount from the inside (focuser body including viewfinder bracket is rotatable)

Minimum length:
up to M54x0.75 thread: 114mm
up to 2 inch clamping: 138 mm

Maximum length:
up to the M54x0.75 thread: 209mm
up to 2-inch clamping: 233 mm

Hub / adjustment range: 95mm

Total weight with all reductions: 1325 grams

Free knowledge at the narrowest point of the light trap: 50.8 mm
Wall force of the extension tube: 4mm